The Fire Devil (Highschool DxD x Fairy Tail)

What if Natsu Dragneel of Fairy Tail always lived in the Highschool DxD universe and only got his dragon slayer magic after being reborn as a devil? And what if instead having his Dragon slayer magic he had a new type of magic called the Slayer Slayer magic?
Hi people this is my first fanfiction hopefuuly you will like it and I don't own Highschool DxD or Fairy Tail now that we've got that out of the way I hope you enjoy this story Bye.